The Collaborative International Dictionary of English v.0.48:

Refrigerate \Re*frig"er*ate\ (-[=a]t), v. t. [imp. & p. p.
   Refrigerated (-[=a]`t[e^]d); p. pr. & vb. n.
   Refrigerating.] [L. refrigeratus, p. p. of refrigerare;
   pref. re- re- + frigerare to make cool, fr. frigus, frigoris,
   coolness. See Frigid.]
   To cause to become cool; to make or keep cold or cool.
   [1913 Webster]

WordNet (r) 3.0 (2006):

refrigerate
    v 1: preserve by chilling; "many foods must be refrigerated or
         else they will spoil"
    2: cool or chill in or as if in a refrigerator; "refrigerate
       this medicine"

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "refrigerate":
   air-condition, air-cool, anhydrate, benumb, bite, blast-freeze,
   brine, chill, cool, corn, cure, cut, dehydrate, desiccate, dry,
   dry-cure, dry-salt, embalm, evaporate, freeze, freeze-dry, freshen,
   frost, frostbite, fume, go through, ice, ice-cool, infrigidate,
   irradiate, jerk, kipper, marinade, marinate, mummify, nip, numb,
   penetrate, pickle, pierce, preservatize, quick-freeze, refresh,
   salt, season, smoke, smoke-cure, stuff, ventilate